Pure contact term correlators in CFT

Loriano Bonora; Bruno Lima de Souza

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arXiv · 1511.06635

Pure contact term correlators in CFT

Loriano Bonora·Bruno Lima de Souza

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Abstract

We discuss the case of correlators in CFT made of pure contact terms, without a corresponding bare part. We show two examples. The first is provided by the conformal limits of a free massive fermion theory in 3d. We show that the (conserved) current correlators are in one-to-one correspondence with the terms of the 3d gauge CS action. The second is the Pontryagin trace anomaly. The corresponding 3-point correlator is nonvanishing even though the corresponding untraced correlator vanishes.

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Loriano Bonora, Bruno Lima de Souza. 2016-02-09. Pure contact term correlators in CFT. https://arxiv.org/abs/1511.06635

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